code: def _get_cache() -> CacheInterface | None:
      # TODO(b/289098047): consider making this an API and changing the callers of
      # get_executable_and_time() and put_executable_and_time() to call get_cache()
      # and passing the result to them.
      if _cache is None:
          _initialize_cache()  # initialization is done at most once; see above
      return _cache
  
imports: from __future__ import annotations
  import logging
  import threading
  import warnings
  import zlib
  import numpy
  from jax._src import cache_key
  from jax._src.compilation_cache_interface import CacheInterface
  from jax._src import config
  from jax._src import monitoring
  from jax._src.gfile_cache import GFileCache
  from jax._src.lib import xla_client
  from jax._src.lib.mlir import ir
label_desc: Use image node_id 8 for calling a global function with example usage: _get_cache() and returns: _cache